This module provides an essential overview of specialized electrical measurement tools and safety standards. It explains the mechanics of clamp-on ammeters, which measure high current by sensing magnetic fields, and highlights the importance of True RMS (Root Mean Square) technology for obtaining accurate readings on modern electronic equipment. Additionally, the module covers critical meter safety categories (CAT I-IV) to ensure technicians select the appropriate tool for residential, commercial, or industrial environments.

This module explains how to safely and accurately measure AC voltage in a live circuit using a digital multimeter. Learners will follow a step-by-step process for setting up their meter leads and dial, while exploring the concepts of electrical potential through a practical switch and light bulb circuit. The lesson also covers how to interpret meter readings across both loads and switch contacts to troubleshoot power flow.

This module covers how to test continuity using a digital multimeter. Continuity testing is a quick way to verify if a path for current flow exists within a wire, switch, or electrical contact. You will learn how to set up your meter, interpret the audible alert, and use the test to verify the state of electrical components.

This module explains how to measure small electrical currents, known as fractional amperages, using a digital multimeter. It covers the specific setup required for inline amperage measurement, the importance of circuit placement for meter protection, and an alternative method using a line multiplier with a clamp-on ammeter for low-current detection.

This module provides a guide to testing diodes, which are electronic components that allow current to flow in only one direction. You will learn how to identify diode terminals, configure your multimeter for testing, and interpret readings to determine if a diode is functional, shorted, or open.

This module details the procedures for measuring capacitance, which is the ability of a component to store an electrical charge. Using motor capacitors as examples, the lesson covers critical safety steps—such as discharging stored energy—how to configure the multimeter, and how to interpret microfarad readings for both single and dual capacitors.

This module explains how to use a digital multimeter for advanced troubleshooting of flame rectification signals in gas appliances. You will learn how to measure the minute electrical current that proves a flame exists, ensuring the Integrated Furnace Control (IFC) allows combustion to continue safely.